Covalent conjugation of antimicrobial peptides (AMP) is considered an effective approach to overcome their potential degradation in vivo. As the high cost of AMP-based therapies is one of the major hurdles towards their clinical application, it is urgently needed to explore high yield reactions. Herein, the highly efficient thiol-norbornene photoclick chemistry (TNPC) was explored for AMP grafting onto chitosan...